Motor and speed pulley mount for a lathe



Aug. 24, 1937. D. STANLEY MOTOR AND SPEED PULLEY MOUNT FOR A LATHE FiledJune 21, 1935 Q INVENTOR ATTORNEY Patented Aug. 24, 1937 PTENT FEE MOTORAND SPEED PULLEY MOUNT FOR A LATHE Lyle Dale Stanley, Dubuque, IowaApplication June 21,

1 Claim.

The invention relates to a motor and speed pulley mount for a lathe andparticularly jewelers or watchmakers lathes.

The primary object of the invention is the 5 provision of a mount ofthis character, wherein an electric motor can be supported with relationto a lathe and also a speed pulley so that when driving the said latheshocks and vibrations incident to the running of the motor will be ab-19 sorbed and thus relieving these from the lathe and wherein the beltwheel between the pulleys of the lathe and the motor may be shiftedWithout necessity of lining up the lathe and motor and without thenecessity of stopping the operalJ tion of the motor.

Another object of the invention is the provision of a mount of thischaracter, wherein the speed of operation of the lathe can be alteredaccordingly to the requirements of work to be operated upon thereby, themount being novel in construction.

A further object of the invention is the provision of a mount of thischaracter, which is extremely simple in its construction, thoroughly '5reliable and effective in its operation, readily and easily applied toand removed from a lathe and inexpensive to manufacture and install.

With these and other objects in view, the invention consists in thefeatures of construction,

b0 combination and arrangement of parts as will be hereinafter morefully described, illustrated in the accompanying drawing, whichdiscloses the preferred embodiment of the invention and pointed out inthe claim hereunto appended.

In the accompanying drawing:

Figure 1 is a fragmentary top plan view of a lathe showing the mountconstructed in accordance with the invention applied thereto.

Figure 2 is a rear elevation.

Figure 3 is a sectional view on the line 33 of Figure 2 looking in thedirection of the arrows.

Figure 4 is a perspective View of one member of the mount.

Figure 5 is a perspective view of another mem- 5 ber of the mount.

Figure 6 is a perspective view of a modified form of bracket for thespeed pulley of the mount.

Similar reference characters indicate corres.) sponding parts throughoutthe several views in the drawing.

Referring to the drawing in detail, particularly Figures 1 to 5inclusive, A designates generally a portion of the bed of a lathe standhaving ad- 55 justably connected therewith a head stock [0 1935, SerialNo. 27,783

for a live spindle H, the latter being driven by a stepped cone pulleyI?! for a belt iii, the bed A being formed with the usual standard M forrest upon a support such as a work bench l5 and this standard M is heldfast upon the bench through the medium of a nut carrying screw Hi, thesame being passed through a suitable hole or opening H provided in saidbench.

The mount constituting the present invention includes a flat metalmember 53 in the form of a bracket having a disklike or circular shapedterminal l9 provided with a center opening 28 for accommodating thescrew it when the said terminal I9 is located beneath the standard M andat rest upon the bench 55 so that the member l8 will be held secure.This member i8 is upwardly angled away from the terminal l9 and theother terminal thereof, which is of less size than the terminal l9 andcircular as at H, is elevated slightly above the plane of the bench l5.Engaged centrally in the terminal 2| is a fastener 22 for an electricmotor 23, the fastener being passed through a resilient sleeve M whichis interposed between the said motor and member l8 for absorbing shocksand vibrations when the motor is operating. The sleeve 2% has providedtherein a clearance 25 for a current conductor 28 to the motor 23.

Formed with the casing of the motor 23 is an upstanding bearing 27 for apower shaft 28 having fixed thereto a stepped cone pulley 29 which hastrained thereover the belt l3 and also a driving belt 30 which istrained over a power pulley 3% on the power shaft of the motor 23. Byadjustment of the belt t3 the speed of operation of the lathe can bealtered as should be apparent from Figures 1 to 3 of the drawing.

In Figure 6 of the drawing there is shown a slight modification whereina bearing bracket 32 is detachably fastened to the casing of the motor23 and constitutes a substitute for the bearing bracket 2i integrallyformed with the said casing of the motor.

The resilient sleeve 2% interposed between the member 18 at the terminal2! and the motor 23 functions as a shock absorber to relieve vibrationsincident to the rotation of the motor 23 from the lather during theworking thereof.

What is claimed is:

A power unit attachment for a watchmakers lathe having a cone pulley,comprising a lathe, a metal bracket having straight ends and an angleportion between said ends and one of said ends being pivotally securedto the lathe but normally held from turning thereon and the second endof the bracket being elevated above said connected end, an electricmotor having its casing formed with an upstanding bearing for a. countershaft that carries a cone pulley which is normally parallel with thecone pulley of the lathe and which is belted therewith and which isdriven by the armature shaft of the motor, said motor casing having adepending pivot which passes through the elevated end of the bracket, ashock absorbing sleeve on the pivot between the motor casing andbracket, and adjustable means on the pivot for binding the same to theraised end of the bracket.

LYLE DALE STANLEY.

